linux-kernel - Re: [PATCH v3] usb: core: Add "quirks" parameter for usbcore

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAAd53p74haT9+cwVcToV7OSCxeuJM4sDhadBYvTvD7ZwzdOimQ@mail.gmail.com>
Date:   Sun, 25 Feb 2018 23:45:01 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Oliver Neukum <oneukum@...e.com>,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v3] usb: core: Add "quirks" parameter for usbcore

On Sun, Feb 25, 2018 at 11:18 PM, Matthew Wilcox <willy@...radead.org> wrote:
> On Sun, Feb 25, 2018 at 08:38:33PM +0800, Kai-Heng Feng wrote:
>> v2: Use in-kernel tolower() function.
>
> ... why are you using tolower at all?
>
> You've got 13 quirks already; you may need to use upper case as well
> before too long.

Makes sense. I'll remove tolower() in next version.

>
>> +             quirk = vmalloc(sizeof(struct quirk_entry));
>
> vmalloc?  For a struct that's 24 bytes?  You know that allocates an
> entire 4k page, right?
>

Right, I'll use kmalloc() instead. Or is there any more efficient
malloc function?